Named for the 19th century French paleontologist Eugene Dumortier, dumortierite crystals are intensely colored and extremely scarce, making them highly prized by mineral collectors. Frequently, dumortierite grows as inclusions within quartz, occurring as an abundance of tiny blue specks, so much as to make the gem appear blue. Other dumortierite colors include pink, purple, pink, reddish brown to brown.

Colors

Dark Blue To Violet

Dumortierite-in-quartz classification

CommonName

Dumortierite In Quartz

Species

Quartz

Variety

Dumortierite In Quartz

Colors

Dark Blue To Violet

AlternateNames

Dumortierite Quartz

GemstoneGroups

KeySeparations

Refractive index, appearance, birefringence, optic character and optic figure. A bull's-eye optic figure is determinative for quartz; may also show Airy's spiral optic figure and Brazil-law twinning under crossed polarizing filters.